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- RH927AR
- AC Input Terminal Block Cable
- USA
- 2.44 meters
- 3 kg
- Xiamen, China
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Product Overview
The Foxboro RH927AR is an AC input terminal block cable used with the FPS400-24 power supply in Foxboro I/A Series control systems. Its 2.44-meter (96-inch) cable length accommodates installations where the factory mains input terminal block and the power supply are separated by a longer routing distance within the control cabinet. The assembly connects the input terminal block to the power supply’s AC input interface. <Cite refs={[“turn799492search24″,”turn799492search0”]}/>
In a distributed control system cabinet, the power supply may be mounted away from the incoming mains connection to accommodate the cabinet layout, other modules, and wiring access. The RH927AR allows the AC input connection to follow the intended wiring route without requiring a shorter cable to be stretched or routed under mechanical strain.
The cable is associated with the FPS400-24 configuration using the P0922YU power supply reference, which accepts 120/240 V AC or 125 V DC input. The RH927AR is specifically listed among the AC input terminal block cable options for this arrangement. It should not be confused with the DC input cable used with the P0922YC 24 V DC input configuration or with the separate cables that carry power from the supply to baseplates.
For maintenance engineers, the main concern is preserving the correct electrical connection. A replacement should match the cable reference, connector arrangement, and intended input circuit. The RH927AR carries the incoming supply to the power supply; it does not convert voltage, distribute fieldbus signals, or independently protect the circuit against overcurrent.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Foxboro |
| Model | RH927AR |
| Product Family | I/A Series |
| Product Type | AC Input Terminal Block Cable |
| Cable Length | 2.44 meters |
| Cable Length (Imperial) | 96 inches |
| Associated Power Supply | FPS400-24, P0922YU configuration |
| Input Supply Application | 120/240 V AC or 125 V DC |
| Connection | AC/DC input terminal block to power supply |
| Operating Function | Incoming power transmission |
| Shipping Weight | 3 kg |
Product Features
- AC input connection: Connects the designated input terminal block to the compatible power supply.
- Extended cable reach: Provides a 2.44-meter connection for cabinet layouts requiring additional routing distance.
- FPS400-24 compatibility: Applies to the specified P0922YU power supply configuration.
- Pre-terminated assembly: Supports replacement without fabricating individual cable connections.
- Defined electrical purpose: Separates incoming power wiring from the DC output cables used for baseplate connections.
- Maintenance-friendly replacement: Allows the existing input cable to be replaced while retaining the established cabinet arrangement.
Working Principle
The RH927AR establishes the electrical path between the factory mains input terminal block and the FPS400-24 power supply. When connected correctly, its conductors carry the incoming supply to the power supply input terminals.
A simplified arrangement is:
Incoming Supply → P0926DZ Input Terminal Block → RH927AR → FPS400-24 Power Supply
The P0926DZ terminal block provides the connection point for customer input power, while the FPS400-24 converts the incoming supply into the required output for compatible control-system equipment. The cable itself performs no voltage conversion or regulation.
Correct identification of the input and output connections is essential. The RH927AR belongs to the incoming power path. The separate baseplate power cables connect the power supply output to the applicable modular baseplates. Substituting one cable type for the other is not appropriate merely because the connectors appear similar.
During troubleshooting, an interruption in the cable or a loose connection can prevent the power supply from receiving the required input. Inspection should include the incoming source, terminal block, cable connectors, protective grounding, and circuit protection. Any continuity testing or reconnection must be performed with the circuit isolated and in accordance with the equipment’s electrical safety procedures.
Role in the Foxboro I/A Series Power Architecture
The RH927AR occupies the incoming power connection between the terminal block and the FPS400-24 supply. It is part of the cabinet’s power distribution arrangement, separate from the DC wiring that supplies modular baseplates.
Incoming Power → P0926DZ Terminal Block → RH927AR → FPS400-24 → Baseplate Power Cables → Control-System Modules
| System Element | Function |
|---|---|
| RH927AR | Carries incoming power between the input terminal block and power supply |
| P0926DZ Input Terminal Block | Provides the customer power connection |
| FPS400-24 Power Supply | Converts the incoming supply into the required output power |
| Baseplate Power Cable | Carries output power from the supply to compatible baseplates |
| Modular Baseplate | Distributes power to installed control-system modules |
| Circuit Protection | Provides the required protection for the input circuit |
| Protective Grounding | Establishes the required safety grounding path |
Industrial Applications
| Application | Practical Use |
|---|---|
| Foxboro I/A Series Control Cabinets | Connecting the incoming power terminal block to the FPS400-24 supply |
| Process Automation Plants | Maintaining power input wiring in distributed control cabinets |
| Chemical Processing Facilities | Supporting the power connection for process-control equipment |
| Oil and Gas Control Rooms | Maintaining designated supply connections in compatible DCS installations |
| Power Generation Facilities | Replacing an AC input cable during planned cabinet maintenance |
| Water and Wastewater Plants | Maintaining control-system power wiring in utility installations |
| Control Cabinet Refurbishment | Replacing damaged or deteriorated input cable assemblies |
| Industrial Troubleshooting | Checking the incoming power path when the supply does not start |
Installation and Maintenance
- Verify the complete part number: Confirm RH927AR and ensure that the cable matches the installed FPS400-24 input arrangement.
- Identify the input circuit: Confirm the connection between the P0926DZ terminal block and the P0922YU power supply configuration.
- Check the supply requirements: Verify the incoming source and power supply configuration against the applicable wiring diagram.
- Isolate the circuit: Apply the required lockout and electrical isolation procedures before disconnecting the cable.
- Inspect the cable jacket: Look for cuts, crushed sections, exposed conductors, and evidence of overheating.
- Examine the connectors: Check contact condition, connector housings, and locking features for damage or contamination.
- Verify the terminal assignments: Confirm the designated line, neutral or DC input, grounding, and shield connections against the wiring documentation.
- Route the cable correctly: Avoid sharp edges, excessive bending, hot surfaces, and mechanical interference within the cabinet.
- Connect the replacement: Fit the cable to the designated interfaces without forcing connectors or altering the original wiring arrangement.
- Check grounding continuity: Verify the required protective grounding connection before restoring power.
- Test the supply input: Restore power according to the commissioning procedure and confirm that the FPS400-24 operates normally.
- Record the maintenance work: Document the cable reference, connection points, inspection findings, and commissioning results.
Compatible System Components
| Component | Function |
|---|---|
| Foxboro RH927AR | Provides the AC input terminal block cable connection |
| Foxboro FPS400-24 | Supplies power to compatible control-system equipment |
| Foxboro P0922YU | FPS400-24 power supply configuration for 120/240 V AC or 125 V DC input |
| Foxboro P0926DZ | AC/DC input terminal block for the specified power supply arrangement |
| Foxboro RH927AQ | Shorter 1.83-meter AC input terminal block cable |
| Foxboro RH926CM | 0.8-meter AC input terminal block cable |
| Foxboro RH923DA | Shorter 0.4-meter AC input terminal block cable |
| Foxboro RH923DH | DC input terminal block cable for the applicable 24 V DC input arrangement |
| Foxboro RH926KP | Power supply-to-baseplate cable for compatible modular baseplates |
| Foxboro RH931NC | 2.4-meter power supply-to-baseplate cable for compatible modular baseplates |
Recommended Related Models
| Model | Product Type | Typical Application |
|---|---|---|
| Foxboro RH927AQ | AC Input Terminal Block Cable | 1.83-meter input connection for compatible FPS400-24 installations |
| Foxboro RH926CM | AC Input Terminal Block Cable | 0.8-meter input connection for a shorter cabinet route |
| Foxboro RH923DA | AC Input Terminal Block Cable | 0.4-meter input connection for close-mounted equipment |
| Foxboro RH923DH | DC Input Terminal Block Cable | Connecting the terminal block to the applicable 24 V DC input supply |
| Foxboro RH923DG | DC Input Terminal Block Cable | 0.8-meter input connection for the applicable DC supply configuration |
| Foxboro RH931NC | Power Supply-to-Baseplate Cable | Connecting compatible power supply output to a modular baseplate |
Key Advantages
- Provides the specified 2.44-meter incoming power connection.
- Supports the designated FPS400-24 input configuration.
- Separates AC input wiring from DC output-to-baseplate connections.
- Allows replacement of a matching cable without changing the cabinet’s power architecture.
Technical FAQs
Which power supply is associated with the RH927AR?
The RH927AR is listed for the FPS400-24 power supply in the P0922YU configuration, which supports 120/240 V AC or 125 V DC input. The actual installed configuration should be verified before replacement.
What is the difference between the RH927AR and RH927AQ?
Both are AC input terminal block cables for the applicable power supply arrangement. The RH927AR is 2.44 meters (96 inches) long, while the RH927AQ is 1.83 meters (72 inches) long. Selection depends on the cabinet routing distance and required connection layout.
Can the RH927AR be used with the P0922YC 24 V DC input configuration?
Do not assume compatibility. The P0922YC configuration uses designated DC input terminal block cables, including the RH923DH and RH923DG. Verify the power supply version and its required cable reference before installation.
What should be inspected if the FPS400-24 receives no input power?
Check the incoming supply, P0926DZ terminal block, RH927AR connectors, conductor continuity, and protective grounding. Also verify the relevant circuit protection. Carry out inspections and electrical tests under the required isolation procedures.